Suspension device for globes and reflectors for indirect and concentrated lighting



-0. P. CRAMER. SUSPENSION DEVICE FOR GLOBES AND REFLECTORSTOR INDIRECTAND CONCENTRATED LIGHTING. APPLICATION FILED JULY 51192].

1 14,627, Patented May 2, 1922.

" OTTO IEAUL 0F GENEVA, SNITZEELAND.

scsrnnsron- DEVICE FOR eLo'Bns AND nnrnncroas roe INDIRECT Ann concen- TaA'rEn LIGHTING.

mar ner.

Patented May 2, ieaa.

Application filetl J'uly' 5, 1921. Serial No. 82,512.

To all whom it may concern: 1

Be it known that OTTO PAUL URAMER, engineer, citizen of Germany, residing in Geneva, Switzerland, and whose postofiice address is 118 Rue des EauX-Vives, has invented certain new and useful Improvements'in Suspension Devices for Globes and Reflectors for Indirect and Concentrated Lightingyand he does hereby declare the following to be a full, clear, and exact do? scription of the invention, such as will enable others skilled in the art to "which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

In order to obtain an efficient distribution of the light of a lamp, itis found advantageous to suspend under the lamp shade either an entire or partial globe if it is desired to obtain an upward diffusion of the light or what is termed indirect lighting, or in other-cases a second reflector where the object is to obtain a concentration of the lightin the downward direction.

The suspension device according to my invention consists in the use of supporting members in the form of portions of a' circle constituting the elastic hook coupling members used to secure the lower globe or reflector. Where elastic coupling hooks in the form of spring clamps are employed, these latter will constitute a clamp wherein the edge of the globe is tightly held, and the said clamps are suspended at the desired height from the flanged collar of the lamp of chains.

The accompanying drawings show vari-.

ous embodiments of my invention.

in sheet steel, a plurality of the same being employed for the same purpose as a circular support. Fig. 2shows the same clamp mounted upon a reflector, and Fig. 3 shows a modified form of the clamp in steel wire. Fig. 4 represents the entire suspension device for a reflector, employing the said clamps. Fig. 5 shows a modified form of hook connection wherein the chains are replaced by cords provided with glass beads.

In the form of construction shown, the complete support is constituted by elastic clamps or fasteners. Such clamps, Fig.

Fig. 1 is a perspective view of a clamp 1, which are made of sheet steel, are punched and bent into shape in such manner that the inner portion a of the clamp shall be longer than the two outer portions a The curved portion of a. is fitted into the flaring part of the globe h in order to hold the latter firmly and to avoid all slipping, Fig. 2. The said clamp is also provided with a small tongue or hook .a -for coupling with the chain 6. It is also observed in Fig. 2, that the suspension chain 6 draws upon the said hook in a direction which forms an angle of about with the center line of the clamp, in such manner that the traction of the chain will act still further to press theclamp against the edge of the globe It, thus affording great safety for this connection.

Fig. 3 shows a clamp which is constructed on the same principle as that of Fig. 1, but is here made of steel wires bent in such manner as to obtain the same advantages.

For the suspension of the globe h the chains I) may be replaced by cords 6 Fig. 5, provided with small glass beads-,balls or knots, and in this case the clamp is provided witha fork portion a instead of a simple hook. The suspension of the globe is here obtained by inserting the said'cord in the fork portion at between any two of the beads and at the desired height.

In Figs. 4 the chains Z) are provided at the upper end with hooks 6. These hooks 0 may be given a suitable shape for engaging the three branches f of the metal shade holder to which the reflector is usually secured by three screws, asv shown in Fig. 1.

Having now described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. A suspension device for globes and reflectors for indirect and concentrated lighting, comprising portions of a circular support formed of sheet steel and bent in such a manner as to constitute spring clamps fitting tightly upon the globe, a double hook of fork shape forming part of the said clamps, cords provided with beads adapted to engage the double hooks of the said clamps, and upper hooks for suspending the globes and reflectors from the shade holder of the upper reflector.

2. A suspension device comprising a body portion having a pair of extensi ns space apart at the end thereof, said extensions being shorter than the body portion, and

apart at the end thereof, said extensions being shorter than the body portion, and a pair of shorter spaced extensions between.

the aforesaid extensions, all of said extensions being bent over toward said body portion. 4:. In a suspension device of the character 15 described the combination of a beaded supporting member, a clamp formed of spring metal comprising a body portion having a pair of parallel extensions spaced apart at the end thereof and bent back in parallel relation to said body portion, and a pair 20 of shorter parallel spaced extensions extending between the aforesaid extensionsadapted to embrace the beads of the supporting member.

Intestimony that I claim the foregoing 25 as my invention, I have signed my name.

OTTO PAUL CRAMER. Witnesses:

F. LAN'sIN, N. LAUWOZ. 

